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NTSB Report
January 1, 1992 · Robinson R-22B · N889KT
Lodi, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
January 1, 1992
Injury Outcomes
No injuries (2 uninjured)
Location
Lodi, CA
Aircraft
Robinson R-22B
Tail Number
N889KT
Operator
Mr & Mrs William C Moore
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX92LA076
WEATHER CONDITIONS ALONG THE AIRCRAFT'S FLIGHT ROUTE WERE CONDUCIVE TO CARBURETOR ICING. THE PILOT ENTERED AN AUROTATIVE DESCENT WITHOUT APPLYING FULL CARBURETOR HEAT AS RECOMMENDED BY THE AIRCRAFT MANUFACTURER. THE ENGINE FAILED DURING THE DESCENT AND THE HELICOPTER LANDED HARD AND ROLLED OVER ON ITS SIDE. THE PILOT HAD RECEIVED MOST OF HIS FLIGHT EXPERIENCE IN TURBINE POWERED HELICOPTERS.
NTSB Probable Cause
THE PILOT'S IMPROPER USE OF THE CARBURETOR HEAT CONTROL AND DELAY IN FLARING THE HELICOPTER FOR AN AUTOROTATIVE TOUCHDOWN. CARBURETOR ICING CONDITIONS AND THE SOFT TERRAIN WERE CONTRIBUTING FACTORS IN THE ACCIDENT.
Full Narrative
WEATHER CONDITIONS ALONG THE AIRCRAFT'S FLIGHT ROUTE WERE CONDUCIVE TO CARBURETOR ICING. THE PILOT ENTERED AN AUROTATIVE DESCENT WITHOUT APPLYING FULL CARBURETOR HEAT AS RECOMMENDED BY THE AIRCRAFT MANUFACTURER. THE ENGINE FAILED DURING THE DESCENT AND THE HELICOPTER LANDED HARD AND ROLLED OVER ON ITS SIDE. THE PILOT HAD RECEIVED MOST OF HIS FLIGHT EXPERIENCE IN TURBINE POWERED HELICOPTERS.
Flight
Event TypeAccident
Event Time14:20 PST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftRobinson R-22B
Tail NumberN889KT
Aircraft CategoryHeli
DamageSubstantial
OperatorMr & Mrs William C Moore
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-B2C · Reciprocating · 160
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 27 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind80° @ 3 kt
Visibility6 sm
CeilingNone
Temperature / Dew Point50 / 45 C
Altimeter30.00 inHg
Observation Time21:48
Weather SourceWFAC